Meticulous Raises $15M to Accelerate the Pace of Software Development

Meticulous, radically accelerating the pace of software development for every company in the world, led by Gabriel Spencer-Harper and Quentin Spencer-Harper, has raised $15M in Series A funding led by Chemistry.

Comprehensive testing is essential for shipping software rapidly with AI. Without high confidence in test coverage, development velocity is limited regardless of how quickly code can be generated.

Achieving that level of confidence requires testing at a far greater scale than traditional approaches, supported by deterministic execution, automated test generation and maintenance, efficient test orchestration, and robust coverage validation. Equally important is the ability to understand the full impact of every code change, not just whether predefined tests pass, but how the change affects overall system behavior, enabling faster and more informed release decisions.

Meticulous addresses these challenges through fully autonomous, large-scale software testing. The platform automatically generates and maintains thousands of test flows covering edge cases across millions of lines of code, enabling comprehensive validation before production releases. Trusted by engineering teams at companies including Dropbox, Notion, Wiz, and ElevenLabs, the system detects even single-pixel visual differences to identify changes in application behavior and validate underlying logic with high precision.

“Following an initial pilot, Meticulous was rapidly adopted across the engineering organization due to its ability to improve software quality and developer productivity. The platform has since become a core safeguard within the software development process.”

— Erdem Alparslan, Head of Developer Experience, Notion

The summarized insights enable engineers, product managers, and designers to review the full impact of code changes before merging. The same visibility also allows AI agents to refine changes prior to human review by evaluating realistic scenarios and edge cases, improving software quality and development efficiency.

“As AI makes code generation increasingly inexpensive, the development bottleneck is shifting toward code review and feedback. Meticulous helps engineering teams accelerate development while maintaining a high standard of software quality.”

— Zach Davis, Director of Engineering, LaunchDarkly

“Meticulous has built one of the most highly regarded developer products, reflecting exceptional product quality and strong user adoption.”

— Ethan, Chemistry

As software testing becomes increasingly comprehensive, engineering teams gain the confidence to ship code at unprecedented speed. Continued investment in the platform will further expand testing capabilities, enabling faster development cycles while maintaining high standards of software quality and reliability.